First trailer for Ma Rainey's Black Bottom features Viola Davis and Chadwick Boseman in what is sure to be an Oscars contender

Ma Rainey’s Black Bottom was always going to be an award season contender, being a lavish adaptation of an August Wilson play produced by Denzel Washington and starring Viola Davis, but as it is now, sadly, Chadwick Boseman’s final performance, the film carries extra weight and expectations. The fir...